KMnO ₄ acts as an oxidising agent in acidic medium. ' X ' is the difference between the oxidation states of Mn in reactant and product. ' Y ' is the number of ' d ' electrons present in the brown red precipitate formed at the end of the acetate ion test with neutral ferric chloride. The value of X + Y is ______.

Step-by-step solution

( O . A ) +7 KMnO Acidic medium Mn ²⁺ X is difference in oxidation state. 6 CH ₃ COO ^ + Fe ³⁺+ H ₂ O [ Fe ₃ ( OH ₂ ) ( CH ₃ COO )₆ ]^ +2 H ^ [ Fe ₃( OH )₂ ( CH ₃ COO )₆ ]^ (Brown red ppt) +4 H ₂ O [ Fe ( OH )₂ ( CH ₃ COO ]+ CH ₃ COOH + H ^ . Fe ³⁺ 3 ~d ^5 4 ~s ^0 contains 5 d electrons So Y=5 X+Y=5+5=10